Self-charging unmanned vehicle

1. A method comprising:

operating a first unmanned vehicle in a first mode, in which it operates in a mobile manner and functions as an autonomous self-propelled power supply device;

determining, by the first unmanned vehicle, a current power level of the first unmanned vehicle as it operates in the first mode;

determining, by the first unmanned vehicle and based on the current power level, to switch to a second mode, wherein the first unmanned vehicle moves to a location and renders itself stationary such that it uses less power in the second mode than in the first mode;

operating in the second mode; and

switching the first unmanned vehicle to a third mode in which it enables a second unmanned vehicle to dock with the first unmanned vehicle such that the first unmanned vehicle can charge the second unmanned vehicle.

2. The method of claim 1 , wherein, in the first mode, the first unmanned vehicle is configured to travel along a first route; and

wherein, in the second mode, the unmanned vehicle is configured to travel along a second route.

3. The method of claim 1 , wherein the determining to switch to the second mode is further based on a current power usage of the first unmanned vehicle.

4. The method of claim 1 , wherein the method further comprises receiving data from a sensor of the first unmanned vehicle; and

wherein the determining to switch to the second mode is further based on the data from the sensor.

5. The method of claim 1 , wherein the first mode is associated with a first power source and the second mode is associated with a second power source.

6. The method of claim 1 , wherein the determining to switch to the second mode is further based on an environmental condition.

7. The method of claim 1 , wherein the first mode comprises a first speed mode and the second mode comprises a second speed mode.

8. The method of claim 1 , wherein the first unmanned vehicle is traveling to a destination; and

wherein the determining to switch to the second mode is further based on the second unmanned vehicle traveling to the destination.

9. A method comprising:

determining, by a first unmanned vehicle, which operates as an autonomous self-propelled power supply device, power needed for the first unmanned vehicle to travel a first route to a destination;

determining, by the first unmanned vehicle and based on the power needed and a current power level of the first unmanned vehicle, a second route to the destination; wherein the second route to the destination includes a charging location to allow a second unmanned vehicle to charge from the first unmanned vehicle;

traveling along the second route to the destination and stopping at the charging location; and

causing the first unmanned vehicle to enable a second unmanned vehicle to dock with the first unmanned vehicle at the charging location.

10. The method of claim 9 , further comprising determining environmental data associated with the first route; and

wherein the determining the power needed for the first unmanned vehicle to travel the first route is further based on the environmental data.

11. The method of claim 9 , wherein the first route comprises an aerial route and the second route comprises a terrestrial route.

12. The method of claim 9 , wherein the method further comprises receiving data from a sensor of the first unmanned vehicle; and

wherein the determining the power needed for the first unmanned vehicle to travel the first route to the destination is further based on the data from the sensor.

13. The method of claim 9 , wherein the first route is associated with a first parking or landing location at the destination and the second route is associated with a second landing or parking location at the destination.

14. A method comprising:

determining a current power level of a first unmanned vehicle operating in a first power mode, operating in a mobile manner and functioning as an autonomous self-propelled power supply device;

determining, based on the current power level of the first unmanned vehicle and a destination of the first unmanned vehicle, to switch to a second power mode, wherein the unmanned vehicle it uses less power in the second power mode than in the first power mode;

causing the first unmanned vehicle to stop travel to the destination and move to a location and render itself stationary in the second power mode;

causing the first unmanned vehicle to enable a second unmanned vehicle to dock with the first unmanned vehicle; and

charging the second unmanned vehicle at the location.

15. The method of claim 14 , wherein the second power mode comprises a rotor speed mode.

16. The method of claim 14 , wherein the second power mode is associated with a flying altitude of the first unmanned vehicle.

17. The method of claim 14 , wherein the first power mode is associated with travel along a first route and the second power mode is associated with travel along a second route.

18. The method of claim 14 , wherein the first power mode is associated with a first power source and the second power mode is associated with a second power source.

19. The method of claim 14 , wherein the first power mode is associated with a first level of engagement of transmission and the second power mode is associated with a second level of engagement of transmission.